package cn.xuanwu.map;

import cn.xuanwu.dto.Student;
import sun.reflect.generics.tree.Tree;

import java.util.Comparator;
import java.util.TreeMap;

public class Demo7 {
//    TreeMap集合键是Student值是String的案例

    public static void main(String[] args) {



        TreeMap<Student, String> tm = new TreeMap<>(new Comparator<Student>() {
            @Override
            public int compare(Student s1, Student s2) {
                // 根据age比较
                int num =s1.getAge()-s2.getAge();
                // 年龄相同，比较姓名内容
               return num == 0 ? s1.getName().compareTo(s2.getName()):num;
            }
        });
        tm.put(new Student("张三", 23), "北京");
        tm.put(new Student("李四", 13), "上海");
        tm.put(new Student("李四", 13), "深圳");
        tm.put(new Student("王五", 33), "广州");
        System.out.println(tm);

    }
}
